英语完成时态先看看这题啊：These shoes ___ before Peter came.A.had sold ou

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/24 03:19:36

英语完成时态
先看看这题啊：
These shoes ___ before Peter came.
A.had sold out B.have been sold out C.had been sold out
再问下:
have been doing
have done
两个有些什么区别?短暂性和持续性动词的完成时态分别怎么用?
比如说：
I have been bought the book for five years.
这句话对了吗?要错了的话怎么改?

C,鞋子在PETER来之前已经售完.
首先,鞋子与销售是被动关系,是人把鞋子卖掉的,对鞋子来说是被动,排除A,
B和C只是现在完成时和过去完成时的区别.句子意思：鞋子被卖完这个动作在PETER来之前已经完成,PETER来已经是过去时,所以卖鞋一定是过去的过去,所以不能用现在完成时,只能选C
HAVE BEEN DOING持续正在做某事,这个状态已经持续叻一段时间
HAVE DONE已经完成,只是表示动作完成的一个状态,并没有持续
I HAVE BOUGHT THE BOOK FOR FIVE YEARS.这本书我已经买叻5年叻.I BUY THE BOOK,我和买是主动关系,不用被动语态,书和买才是被动关系,而且买只是短暂动词,不能作为表示状态,所以买这个动作不能持续,不能与具体的一段时间连用.本句也可以这样表达 THE BOOK WAS BOUGHT (BY ME) FOR FIVE YEARS AGO.

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